How is Jesus G-d and supposed to know everything when He doesn't know when he is supposed to return for His second coming. This is an argument from Jehovahs Witnesses and I am trying to get an answer for this.
The Mystery of the Incarnation offers us a paradox, as we confess Jesus to be both God and man, fully both in perfect union without confusion or separation.
This means we can say things such as "God died" even though God cannot die. Or that "God suffered" even though God cannot suffer.
It also means that Jesus can not know something, even though He is God.
It's a mystery of the Christian faith, this divine-and-human union in Christ. How can Immortal, Eternal God suffer and die? And yet Christ suffers and dies, though being very and truly Immortal and Eternal God.
Those who reject Christ's Deity will no doubt say that this proves He cannot be true God. And yet Christians--beginning with the Apostles themselves--have always insisted that Christ is God. St. Paul says, "In Him the fullness of Deity is found in bodily form", St. John in the prologue of His gospel writes, "In the beginning was the Logos, the Logos was with God and the Logos was God", again St. Paul says, "Our God and Savior Jesus Christ".
Then when we look at what the ancient fathers, the students and disciples of the apostles, have also said, we can see it has been confessed from time immemorial:
"For our God, Jesus Christ, was conceived by Mary in accord with God's plan: of the seed of David, it is true, but also of the Holy Spirit" - St. Ignatius, 110 AD
"We are not playing the fool, you Greeks, nor do we talk nonsense, when we report that God was born in the form of a man" - Tatian, 170 AD
"It is no way necessary in dealing with persons of intelligence to adduce the actions of Christ after his baptism as proof that his soul and his body, his human nature, were like ours, real and not phantasmal. The activities of Christ after his baptism, and especially his miracles, gave indication and assurance to the world of the deity hidden in his flesh. Being God and likewise perfect man, he gave positive indications of his two natures: of his deity by the miracles during the three years following after his baptism, of his humanity in the thirty years which came before his baptism during which, by reason of his condition according to the flesh, he concealed the signs of his deity, although he was the true God existing before the ages" - Melito of Sardis, 177 AD
"in order that to Jesus Christ our Lord and God and Savior and King, in accord with the approval of the invisible Father, every knee shall bend of those in heaven and on earth and under the earth" - St. Irenaeus, 190 AD
"The Word, then, the Christ, is the cause both of our ancient beginning for he was in God and of our well-being. And now this same Word has appeared as man. He alone is both God and man, and the source of all our good things" - St. Clement of Alexandria, 190 AD
"Although he was God, he took flesh; and having been made man, he remained what he was: God" - Origen, 225 AD
"One who denies that Christ is God cannot become his temple" - Cyprian of Carthage, 250 AD
And we finally confess in the Nicene Creed:
"We believe in one Lord, Jesus Christ, the only-begotten Son of God, God from God, light from light, true God from true God, begotten, not made, one in being with the Father. Through Him all things were made"
Christ is true God and true man. This is the faith of the Christian Church.
-CryptoLutheran